body, html {
    height: 100%;
}

html{
    font: 14px Avenir, Helvetica, Arial, sans-serif;
}

a, abbr, acronym, address, applet, b, big, blockquote, body, caption, center, cite, code, dd, del, dfn, div, dl, dt, em, fieldset, font, form, h1, h2, h3, h4, h5, h6, html, i, iframe, img, ins, kbd, label, legend, li, object, p, pre, q, s, samp, small, span, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, var {
    margin: 0;
    padding: 0;
    border: 0;
    outline: 0;
    vertical-align: baseline;
}

.clearfix:after {
    content: ".";
    display: block;
    height: 0;
    clear: both;
    visibility: hidden;
}

.fl {
    float: left;
}

.fr {
    float: right;
}

body{
    background: #F3F3F3;
}

::-webkit-scrollbar {/*滚动条整体样式*/
    width: 5px;     /*高宽分别对应横竖滚动条的尺寸*/
    height: 1px;
}
::-webkit-scrollbar-thumb {/*滚动条里面小方块*/
    border-radius: 5px;
     -webkit-box-shadow: inset 0 0 5px rgba(0,0,0,0.2);
    background: #00B4CF;
}
::-webkit-scrollbar-track {/*滚动条里面轨道*/
    -webkit-box-shadow: inset 0 0 5px rgba(0,0,0,0.2);
    border-radius: 5px;
    background: transparent;
}